Characteristics of hardness and microstructure of extraction forceps for dental and oral care made of stainless-steel
Keywords:Hardness, Microstructure, Stainless-steel, scanning electron microscopy (SEM), Medical material
The reliability of medical devices such as extraction forceps is vital for dental and oral care. Apart from having hygienic properties, the extraction forceps must be strong and resistant to corrosion. This study evaluates the effects of tempering temperature on the hardness and microstructure of a medical device’s material made from stainless-steel DIN 4021. In the experiments, a heat treatment process was carried out previously with a temperature of 1,050°C and a holding time of 20 minutes. A quenching process was conducted using a cooling channel that flowed with water at 10-20°C. After the heat treatment, the material was subjected to a tempering process with temperature variations of 200, 400, and 600°C. The research results indicated that the heat treatment process could increase the material’s hardness —the hardness of the raw material changed from 20 to 48.67 HRC with the heat treatment. The tempering parameters resulted in the highest hardness of 46.67 HRC at 200°C and the lowest value of 42.33 HRC at 600°C. Microstructure testing using optical microscopy showed that it produced ferrite, pearlite, and martensite structures. In contrast, the result of a microstructure testing using Scanning Electron Microscopy on the surface of the material is that the higher the tempering temperature, the greater the microstructures’ dimension.
G.R. Mirshekari, E. Tavakoli, M. Atapour, and B. Sadeghian, “Microstructure and corrosion behavior of multipass gas tungsten arc welded 304l stainless steel”, Materials and Design, vol. 55, pp.905-911, 2014. https://doi.org/10.1016/j.matdes.2013.10.064.
F. Karci, R. Kaçar, and S. Gündüz, “The effect of process parameter on the properties of spot-welded cold deformed AISI 304 grade austenitic stainless steel”, Journal of Materials Processing Technology, vol. 209, no. 8, p.4011-4019, 2009. https://doi.org/10.1016/j.jmatprotec.2008.09.030.
H. Hariningsih, S. Sumpena and H. Sukarjo, “The effectivity of used-oil as quenching medium of 42-CrMo4 steel for automotive materials”, Applied Research and Smart Technology, vol. 1, no. 1, 2020. https://doi.org/10.23917/arstech.v1i1.11.
E. Abbasi, Q. Luo, and D. Owens, “A comparison of microstructure and mechanical properties of low-alloy-medium-carbon steels after quench-hardening”, Materials Science and Engineering: A, vol. 725, p.65-75, 2018. https://doi.org/10.1016/j.msea.2018.04.012.
A.F. Candelária and C. E. Pinedo, “Influence of the heat treatment on the corrosion resistance of the martensitic stainless steel type AISI 420”, Journal of Materials Science Letters, vol. 22, no. 16, pp. 1151–1153,.2003. https://doi.org/10.1023/A:1025179128333.
J.Y. Park and Y.S. Park, “Effects of austenitising treatment on the corrosion resistance of 14Cr-3Mo martensitic stainless steel”, Corrosion, vol. 62, no. 6, pp.541–547,.2006. https://doi.org/10.5006/1.3279913
R.E. Smallman and R.J. BiShop, “Biomaterials,” Modern Physical Metallurgy and Materials Engineering, science, process, applications, pp. 394–405, 1999. http://dx.doi.org/10.1016/B978-075064564-5/50013-6.
S. Safaltin and S. Gürmen, “Molecular dynamics simulation of size, temperature, heating and cooling rates on structural formation of Ag-Cu-Ni ternary nanoparticles (Ag34-Cu33-Ni33)”, Computational Materials Science, vol. 183, 109842, 2020. https://doi.org/10.1016/j.commatsci.2020.109842.
ISO 13485: medical devices - quality management systems - requirements for regulatory purposes,” Engineering High Quality Medical Software: Regulations, standards, methodologies and tools for certification, 2018.
L.C. Lim, M.O. Lai, J. Ma, D.O. Northwood, and B. Miao, “Tempering of AISI 403 stainless steel”, Materials Science and Engineering: A, vol. 171, no. 1–2, pp.13–19, 1993. https://doi.org/10.1016/0921-5093(93)90388-U.
T. Senthilkumar and T.K. Ajiboye, “Effect of heat treatment processes on the mechanical properties of medium carbon steel”, Journal of Minerals and Materials Characterization and Engineering, vol. 11, no. 2, pp.143-152, 2012. https://doi.org/10.4236/jmmce.2012.112011.
Y. Duan, S. Qu, and X. Li, “Effect of quench-tempering conditions prior to nitriding on microstructure and fretting wear mechanism of gas nitrided X210CrW12 steel”, Surface and Coatings Technology, vol. 360, pp.247-258, 2019. https://doi.org/10.1016/j.surfcoat.2018.12.066.
L.D. Barlow and M. Du Toit, “Effect of austenitising heat treatment on the microstructure and hardness of martensitic stainless steel AISI 420”, Journal of Materials Engineering and Performance, vol. 21, no. 7, pp. 1327–1336, 2012. https://doi.org/10.1007/s11665-011-0043-9.
X. Lei, Y. Feng, J. Zhang, A. Fu, C. Yin, and D.D. Macdonald, “Impact of reversed austenite on the pitting corrosion behavior of super 13Cr martensitic stainless steel”, Electrochimica Acta, vol. 191, pp. 640–650,.2016. https://doi.org/2010.1016/j.electacta.2016.01.094.
T. Hryniewicz, K. Rokosz, and M. Filippi, “Biomaterial studies on AISI 316L stainless steel after magneto electro polishing”, Materials, vol. 2, no. 1, pp.129-145, 2009. https://doi.org/10.3390/ma2010129.
H. Megahed, E. El-Kashif, A.Y. Shash, and M.A. Essam, “Effect of holding time, thickness and heat treatment on microstructure and mechanical properties of compacted graphite cast iron”, Journal of Materials Research and Technology, vol. 8, no. 1, pp.1188-1196,.2019. https://doi.org/10.1016/j.jmrt.2018.07.021.
W. Jiang, J.M. Gong, and S.T. Tu, “Effect of holding time on vacuum brazing for a stainless steel plate-fin structure”, Materials and Design, vol.31, no. 4, pp.2157-2162, 2010. https://doi.org/10.1016/j.matdes.2009.11.001
A.N. Isfahany, H. Saghafian, and G. Borhani, “The effect of heat treatment on mechanical properties and corrosion behavior of AISI420 martensitic stainless steel”, Journal of Alloys and Compounds, vol. 509, no. 9, pp.3931–3936, 2011. https://doi.org/10.1016/j.jallcom.2010.12.174.
B. Abbasi-Khazaei and A. Mollaahmadi, “Rapid tempering of martensitic stainless steel AISI420: microstructure, mechanical and corrosion properties”, Journal of Materials Engineering and Performance, vol. 26, pp.1626-1633, 2017. https://doi.org/10.1007/s11665-017-2605-y.
P.R. Woodard, S. Chandrasekar, and H.T.Y. Yang, “Analysis of temperature and microstructure in the quenching of steel cylinders”, Metallurgical and Materials Transactions B, vol. 30, article:815, 1999. https://doi.org/10.1007/s11663-999-0043-4.
D.R. Barbadikar, G.S. Deshmukh, L. Maddi, K. Laha, P. Parameswaran, A.R. Ballal, D.R. Peshwe., R.K. Paretkar, M. Nandagopal and M.D. Mathew, “Effect of normalising and tempering temperatures on microstructure and mechanical properties of P92 steel”, International Journal of Pressure Vessels and Piping, vol. 132-133, pp.97-105, 2015. https://doi.org/10.1016/j.ijpvp.2015.07.001.
P. Garg, A. Jamwal, D. Kumar, K.S. Sadasivuni, C.M. Hussain, and P. Gupta, “Advance research progresses in aluminium matrix composites: manufacturing & applications”, Journal of Material Research and Technology, vol. 8, no. 5, pp. 4924-4939,.2019. https://doi.org/10.1016/j.jmrt.2019.06.028.
A. Oddy and D.A. Scott, “Metallography and microstructure of ancient and historic metals,” Studies in Conservation, The Getty Conservation Institute, Tien Wah Press, Singapore, 1992.
A. Kisasoz, A. Karaaslan, and Y. Bayrak, “Effect of etching methods in metallographic studies of duplex stainless steel 2205”, Metal Science and Heat Treatment, vol. 58, pp.704-706, 2017. https://doi.org/10.1007/s11041-017-0081-5.
S. Fang, W. Chen, and Z. Fu, “Microstructure and mechanical properties of twinned Al0.5CrFeNiCo 0.3C0.2 high entropy alloy processed by mechanical alloying and spark plasma sintering”, Materials & Design, vol. 54, pp.973-979, 2014. https://doi.org/10.1016/j.matdes.2013.08.099.
A.A. Sayed and S. Kheirandish, “Affect of the tempering temperature on the microstructure and mechanical properties of dual phase steels”, Materials Science and Engineering: A, vol 532, pp.21-25, 2012. https://doi.org/10.1016/j.msea.2011.10.056.
R. Heard, C.R. Siviour, and K.I. Dragnevski, “In situ SEM analysis of surface oxidation mechanisms in carbon steel during vacuum heat treatment”, Materialstoday: Proceedings, vol. 33, part 4, pp.1898-1903,.2020. https://doi.org/10.1016/j.matpr.2020.05.396.
S. Maaß, J. Rojahn, R. Hänsch, and M. Kraume, “Automated drop detection using image analysis for online particle size monitoring in multiphase systems”, Computers Chemical Engineering, vol. 45, pp.27-37,.2012. https://doi.org/10.1016/j.compchemeng.2012.05.014.
S.J. Blott and K. Pye, “Particle size distribution analysis of sand-sized particles by laser diffraction: An experimental investigation of instrument sensitivity and the effects of particle shape,” Sedimentology, vol. 53, no. 3, pp.671-685, 2006. https://doi.org/10.1111/j.1365-3091.2006.00786.x
S. Banerjee, P.C. Chakraborti, and S.K. Saha, “An automated methodology for grain segmentation and grain size measurement from optical micrographs”, Measurement, vol. 140, pp. 142–150, 2019. https://doi.org/10.1016/j.measurement.2019.03.046
F. Papadopulos, M. Spinelli, S. Valente, L. Oroni, C. Orrico, F. Alviano, and G. Pasquinelli, “Common tasks in microscopic and ultrastructural image analysis using ImageJ”, Ultrastructural Pathology, vol. 31, no. 6, pp.401-407, 2007. https://doi.org/10.1080/01913120701719189.
ASTM E18/18M-11, “Standard test methods for rockwell hardness of metallic materials,” ASTM International, 2018.
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